کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4062082 1604031 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comparison of Surface Characteristics of Retrieved Cobalt-Chromium Femoral Heads With and Without Ion Implantation
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی ارتوپدی، پزشکی ورزشی و توانبخشی
پیش نمایش صفحه اول مقاله
Comparison of Surface Characteristics of Retrieved Cobalt-Chromium Femoral Heads With and Without Ion Implantation
چکیده انگلیسی

Nitrogen ion implantation of CoCr is reported to produce increased surface hardness and a lower friction surface. Femoral heads with and without ion implantation retrieved from 1997 to 2003 were evaluated for surface roughness (average surface roughness [Ra], mean peak height [Rpm], and maximum distance from peak to valley [Rmax]), nanohardness, and the ion-treated layer thickness. The difference in average Rmax (P = .033) and average Rpm (P = .008) was statistically significant, but there was no correlation between the average or maximum roughness parameters (average surface roughness, Rmax, and Rpm) and time in vivo (P > .05). Overall, nanohardness was greater for the low-friction ion-treated heads (P < .001); and it decreased with increasing time in vivo (P = .01). Ion treatment produces an increased surface hardness, but the advantage of this increased hardness appears to dissipate over time in vivo.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Arthroplasty - Volume 27, Issue 1, January 2012, Pages 109–115
نویسندگان
, , , , ,